<template>
	<div :class="className" :style="{height:height,width:width}" />
</template>

<script>
	import echarts from 'echarts'
	require('echarts/theme/macarons') // echarts theme
	import resize from './mixins/resize'
	export default {
		mixins: [resize],
		props: {
			className: {
				type: String,
				default: 'chart'
			},
			width: {
				type: String,
				default: '100%'
			},
			height: {
				type: String,
				default: '300px'
			}
		},
		data() {
			return {
				chart: null
			}
		},
		mounted() {
			this.$nextTick(() => {
				this.initChart()
			})
		},
		beforeDestroy() {
			if(!this.chart) {
				return
			}
			this.chart.dispose()
			this.chart = null
		},
		methods: {
			initChart() {
				this.chart = echarts.init(this.$el, 'macarons')
				forumStatistical().then(res => {
					var values = res.data;
					values.sort(function(a, b) {
						return  b.value - a.value ;
					});
					var name = [];
					var value = [];
					var data = [];
					values.map(item => {
						name.push(item.name);
						value.push(item.value);
						data.push({
							name: item.name,
							value: item.value,
						})
					})
					this.chart.setOption({
						title: {
							text: '板块帖子数',
							left:'center',
							textStyle:{
								'fontSize':'14px'
							}
						},
						tooltip: {
							trigger: 'item',
							formatter: '{a} <br/>{b} : {c} ({d}%)'
						},
						legend: {
							left: 'center',
							bottom: '10',
							data: name
						},
						series: [{
							name: '板块帖子数',
							type: 'pie',
							roseType: 'radius',
							radius: [15, 95],
							center: ['50%', '50%'],
							data: data,
							animationEasing: 'cubicInOut',
							animationDuration: 2600
						}]
					})
				})
			}
		}
	}
</script>